KVM: PPC: booke: add sregs support

[android-x86/kernel.git] / arch / powerpc / kvm / e500.c

diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index 0c1af12..318dbc6 100644 (file)
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -97,6 +97,81 @@ int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
        return 0;
 }
 
+void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
+{
+       struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+
+       sregs->u.e.features |= KVM_SREGS_E_ARCH206_MMU | KVM_SREGS_E_SPE |
+                              KVM_SREGS_E_PM;
+       sregs->u.e.impl_id = KVM_SREGS_E_IMPL_FSL;
+
+       sregs->u.e.impl.fsl.features = 0;
+       sregs->u.e.impl.fsl.svr = vcpu_e500->svr;
+       sregs->u.e.impl.fsl.hid0 = vcpu_e500->hid0;
+       sregs->u.e.impl.fsl.mcar = vcpu_e500->mcar;
+
+       sregs->u.e.mas0 = vcpu_e500->mas0;
+       sregs->u.e.mas1 = vcpu_e500->mas1;
+       sregs->u.e.mas2 = vcpu_e500->mas2;
+       sregs->u.e.mas7_3 = ((u64)vcpu_e500->mas7 << 32) | vcpu_e500->mas3;
+       sregs->u.e.mas4 = vcpu_e500->mas4;
+       sregs->u.e.mas6 = vcpu_e500->mas6;
+
+       sregs->u.e.mmucfg = mfspr(SPRN_MMUCFG);
+       sregs->u.e.tlbcfg[0] = vcpu_e500->tlb0cfg;
+       sregs->u.e.tlbcfg[1] = vcpu_e500->tlb1cfg;
+       sregs->u.e.tlbcfg[2] = 0;
+       sregs->u.e.tlbcfg[3] = 0;
+
+       sregs->u.e.ivor_high[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL];
+       sregs->u.e.ivor_high[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA];
+       sregs->u.e.ivor_high[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND];
+       sregs->u.e.ivor_high[3] =
+               vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
+
+       kvmppc_get_sregs_ivor(vcpu, sregs);
+}
+
+int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
+{
+       struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+
+       if (sregs->u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
+               vcpu_e500->svr = sregs->u.e.impl.fsl.svr;
+               vcpu_e500->hid0 = sregs->u.e.impl.fsl.hid0;
+               vcpu_e500->mcar = sregs->u.e.impl.fsl.mcar;
+       }
+
+       if (sregs->u.e.features & KVM_SREGS_E_ARCH206_MMU) {
+               vcpu_e500->mas0 = sregs->u.e.mas0;
+               vcpu_e500->mas1 = sregs->u.e.mas1;
+               vcpu_e500->mas2 = sregs->u.e.mas2;
+               vcpu_e500->mas7 = sregs->u.e.mas7_3 >> 32;
+               vcpu_e500->mas3 = (u32)sregs->u.e.mas7_3;
+               vcpu_e500->mas4 = sregs->u.e.mas4;
+               vcpu_e500->mas6 = sregs->u.e.mas6;
+       }
+
+       if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
+               return 0;
+
+       if (sregs->u.e.features & KVM_SREGS_E_SPE) {
+               vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] =
+                       sregs->u.e.ivor_high[0];
+               vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] =
+                       sregs->u.e.ivor_high[1];
+               vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] =
+                       sregs->u.e.ivor_high[2];
+       }
+
+       if (sregs->u.e.features & KVM_SREGS_E_PM) {
+               vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] =
+                       sregs->u.e.ivor_high[3];
+       }
+
+       return kvmppc_set_sregs_ivor(vcpu, sregs);
+}
+
 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
 {
        struct kvmppc_vcpu_e500 *vcpu_e500;